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(140-2x)+x+x=180
We move all terms to the left:
(140-2x)+x+x-(180)=0
We add all the numbers together, and all the variables
(-2x+140)+x+x-180=0
We add all the numbers together, and all the variables
2x+(-2x+140)-180=0
We get rid of parentheses
2x-2x+140-180=0
We add all the numbers together, and all the variables
-40!=0
There is no solution for this equation
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